What is gabapentin (Gralise, Horizant, Neurontin)?

Gabapentin is an anti-epileptic medication, also called an anticonvulsant. It affects chemicals and nerves in the body that are involved in the cause of seizures and some types of pain.

Gabapentin is used alone or in combination with other medications to treat seizures caused by epilepsy in adults and children who are at least 12 years old. Gabapentin is also used with other medications to treat partial seizures in children who are 3 to 12 years old.

Gabapentin may also be used for purposes not listed in this medication guide.

Gabapentin 100 mg Cap-IVA

capsule, white, imprinted with Logo 4381, 100 mg

Gabapentin 100 mg-AMN

capsule, white, imprinted with IP 101

Gabapentin 100 mg-APO

capsule, white, imprinted with APO, 112

Gabapentin 100 mg-GRE

capsule, white, imprinted with G, 5026

Gabapentin 100 mg-TEV

gray, imprinted with 93 38

Gabapentin 300 mg Cap-IVA

capsule, white/yellow, imprinted with Logo 4382, 300 mg

Gabapentin 300 mg-AMN

capsule, yellow, imprinted with IP 102

Gabapentin 300 mg-APO

capsule, white/yellow, imprinted with APO, 113

Gabapentin 300 mg-GRE

capsule, yellow, imprinted with G, 5027

Gabapentin 300 mg-TEV

capsule, orange, imprinted with 93 39

Gabapentin 400 mg Cap-IVA

capsule, orange/white, imprinted with Logo 4383, 400 mg

Gabapentin 400 mg-AMN

capsule, brown, imprinted with IP 103

Gabapentin 400 mg-APO

capsule, orange/white, imprinted with APO, 114

Gabapentin 400 mg-GRE

capsule, orange, imprinted with G, 5028

Gabapentin 400 mg-TEV

brown, imprinted with 93 40

Gabapentin 600 mg Tab-IVA

oval, white, imprinted with Logo 4443, 600

Gabapentin 600 mg-APO

oblong, white, imprinted with APO, GAB 600

Gabapentin 600 mg-GRE

elliptical, white, imprinted with G 21

Gabapentin 800 mg Tab-IVA

oval, white, imprinted with Logo 4444, 800

Gabapentin 800 mg-APO

oblong, white, imprinted with APO, GAB 800

Gabapentin 800 mg-GRE

elliptical, white, imprinted with G 22

Neurontin 100 mg

capsule, white, imprinted with Neurontin 100 mg, PD

Neurontin 300 mg

capsule, yellow, imprinted with Neurontin 300 mg, PD

Neurontin 400 mg

capsule, orange, imprinted with Neurontin 400 mg, PD

Neurontin 600 mg

oval, white, imprinted with NEURONTIN 600

Neurontin 800 mg

oval, white, imprinted with NEURONTIN 800

What are the possible side effects of gabapentin (Gralise, Horizant, Neurontin)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; fever; swollen glands; painful sores in or around your eyes or mouth; difficulty breathing; swelling of your face, lips, tongue, or throat.

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, depression, or if you feel agitated, hostile, restless, hyperactive (mentally or physically), or have thoughts about suicide or hurting yourself.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about gabapentin (Gralise, Horizant, Neurontin)?

You should not use this medication if you are allergic to gabapentin.

Before taking gabapentin, tell your doctor if you have kidney, liver, or heart disease.

You may have thoughts about suicide while taking gabapentin. Your doctor will need to check you at regular visits. Do not miss any scheduled appointments.

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, depression, or if you feel agitated, hostile, restless, hyperactive (mentally or physically), or have thoughts about suicide or hurting yourself.

Do not stop taking gabapentin for seizures without first talking to your doctor, even if you feel fine. You may have increased seizures if you stop using gabapentin suddenly. You may need to use less and less before you stop the medication completely.

Contact your doctor if your seizures get worse or you have them more often while taking gabapentin.

Wear a medical alert tag or carry an ID card stating that you take gabapentin. Any doctor, dentist, or emergency medical care provider who treats you should know that you take seizure medication.